N10-009 - Network Operations - Section 3.1

Use appropriate statistics and sensors to ensure network availability, including SNMP, flow data, logs, and baseline performance metrics.

Use monitoring tools and sensors - SNMP polling and traps, NetFlow/sFlow, syslog, and SIEM collection - to observe network health and detect anomalies against an established baseline. Interpret interface counters, utilisation, latency, jitter, and packet-loss metrics to identify a degraded link or oversubscribed segment before it causes an outage.

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